Question

NAME

PER
Percent Composition
1. A sample of a compound is found to contain 32 g of Zn and 16 g of sulfur.
What is the percent composition of each element in the compound?

Answer 1

%(Zn) = 67%

%(S) = 33%

Step-by-step explanation:

Step 1: Given data

• Mass of zinc (mZn): 32 g

• Mass of sulfur (mS): 16 g

Step 2: Calculate the mass of the compound

The mass of the compound is equal to the sum of the masses of the elements that form it.

mCompound = mZn + mS = 32 g + 16 g = 48 g

Step 3: Calculate the percent composition of each element in the compound

We will use the following expression.

%(Element) = mElement / mCompound × 100%

%(Zn) = 32 g / 48 g × 100% = 67%

%(S) = 16 g / 48 g × 100% = 33%